These aren’t your granny’s squares

My main project since just before Christmas has been an afghan for a friend of mine. Many months ago (I believe somewhere around May 2015), he commissioned me to create a blanket with the chemical structure of melatonin knit into it. I spent quite some time sketching the pattern out on to knitting graph paper (yes, different than regular graph paper). Then I spent a few months hemming and hawing, trying to figure out what yarn to use, and finishing up some other projects I had cast on. 
20160109_211016 Eventually, though, I got around to starting it. 

And now, after what feels like ages of soul-destroying (okay, maybe not that bad) work, I've finished the main body of the blanket. 

blanket

Of course, I like to do everything perfectly, so instead of knitting it in pieces and then grafting them together, I decided to knit it all at once. Two hundred twenty stitches of Aran weight yarn did not fit onto my straight needles, so I had to use my circular ones. Looking back, I perhaps should have chosen to knit in sections. At one point I discovered an error and had to rip out 20 rows...ouch .

At any rate, I'm finally on to figuring out the border for this thing. Taking my lessons learned from the main body, and not wanting to knit a five foot long piece, I've decided to do it in squares. I recently (yesterday) discovered that you can't just call them squares, really: they are granny squares. 

So, I drew up a few concepts, and got feedback on them. Sadly, my camera didn't quite capture the grey. 20160219_110754_HDR

Then, because I always have to explore all my options, I knit up a few squares to see how they looked. 

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The first one I knit in grey, using a seed stitch border. My plan was 3 or so rows on each side of the square, with only one stitch in stockinette before I began with the green. 

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The second I knit in green with a garter stitch border, again with 3 rows on each side, and one stitch of stockinette in the green before starting with the grey. 

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Personally I like the way the grey stands out on the green background, but that also may have to do with the neatness of garter stitch. 

Then, for fun, I did a mitered square to see how it would look. Aside from being totally too big, I hate it. 

miter

Now that I've done a couple test squares and dipped my toe into the bottomless spring of granny squares, I'm wondering if I should do more research on patterns and more square samples before I continue on. 

Then I have to graft them all together.... 

/walks off, muttering to self